Number | Date | Country | Kind |
---|---|---|---|
3527/83 | Jun 1983 | CHX |
Number | Name | Date | Kind |
---|---|---|---|
1750291 | Whetstone | Mar 1930 | |
2542853 | Wills | Feb 1951 | |
2899253 | Jacobs | Aug 1959 | |
3030165 | Nagy | Apr 1962 | |
3066244 | Defandorf et al. | Nov 1962 | |
3088054 | Meyer | Apr 1963 | |
4050752 | Dykstra | Sep 1977 | |
4073554 | Oder et al. | Feb 1978 |
Number | Date | Country |
---|---|---|
2740971 | Mar 1979 | DEX |
1307807 | Sep 1962 | FRX |
1307481 | Sep 1962 | FRX |
1559266 | Nov 1962 | FRX |
Entry |
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Publication entitled "Aluminium fur Elektronik-Zubehor in Elektrotechnische Zeitschrift ETZ, vol. 101, issue No. 6, Mar. 1980. |